The Nasality Severity Index 2.0: Revision of an Objective Multiparametric Approach to Hypernasality

The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association
K BettensF L Wuyts

Abstract

Due to the multidimensional nature of resonance disorders, multivariate diagnostic assessment is advisable. The nasality severity index (NSI) is based on this point of view. Because of the influence of personal and environmental variables on the current NSI, this study aims to refine this index. Prospective case-control study. Tertiary university hospital. Forty-two patients with cleft lip and palate and 50 children without resonance disorders were tested. Resonance was investigated by perceptual as well as objective measurements. A Nasometer was used to score nasalance, and spectral speech characteristics of a sustained sound /i:/ were determined, among which the voice low tone to high tone ratio (VLHR). Binary logistic regression analysis was performed to calculate the optimal index to discriminate patients from control children. Additionally, the validity of the index was determined based on data from an independent patient and control group. The NSI 2.0, a weighted linear combination of three variables, can be obtained using the equation NSI 2.0 = 13.20 - (.0824 × nasalance /u:/ [%]) - (.260 × nasalance oral text [%]) - (.242 × VLHR 4.47*F0 [dB]). The NSI has a sensitivity of 92% and a specificity of 100%. Moreover, it has ...Continue Reading

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Citations

May 14, 2016·Journal of Communication Disorders·Kim BettensKristiane M Van Lierde
Jun 17, 2016·Journal of Communication Disorders·Kim BettensKristiane M Van Lierde
Nov 15, 2016·Logopedics, Phoniatrics, Vocology·Kim BettensKristiane Van Lierde
Dec 27, 2018·The Laryngoscope·Catherine MadillPatricia McCabe
Aug 24, 2018·The Cleft Palate-craniofacial Journal : Official Publication of the American Cleft Palate-Craniofacial Association·Kim BettensKristiane Van Lierde
Sep 21, 2018·Archives of Sexual Behavior·Belle VanpouckeJohn Van Borsel
Oct 27, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Youri MarynNatalie Loomans

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